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CVE-2000-0991

Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote attackers to execute arbitrary commands via a long telnet URL, aka the "HyperTerminal Buffer Overflow" vulnerability.

Published: Dec 19, 2000 Modified: Jun 16, 2026

CVSS Metrics

Affected Products (1)

Vendor Product Version
hilgraeve hyperterminal *

GitHub Security Advisory GHSA-34hw-5cr2-j645

Buffer overflow in Hilgraeve, Inc. HyperTerminal client on Windows 98, ME, and 2000 allows remote...

Risk Scores

CVSS Score 7.5 / 10
EPSS Score 9.69%

Top 5% most likely to be exploited

Threat Score 32.9 / 100

Data Sources

NVD EPSS GitHub